How did Thomson know that the glow in the cathode ray tube was from a stream of charged particles?
If the atomic number of boron is 5, boron-11 contains… How did Thomson know that the glow in the CRT was from a stream of charged particles? Cathode-Ray Tube CRT,it was deflected by a magnet. cathode rays are made up of electrons.
How did JJ Thomson know that the cathode ray was negatively charged?
To test the properties of the particles, Thomson placed two oppositely-charged electric plates around the cathode ray. The cathode ray was deflected away from the negatively-charged electric plate and towards the positively-charged plate. This indicated that the cathode ray was composed of negatively-charged particles.
How did Thomson determine that the cathode ray particles were a new particle and not simply an atom molecule or ion carrying a negative charge?
After much experimentation, Thomson confirmed that the cathode rays were always deflected by a negatively charged plate at the end of the tube. He concluded that the particles were streams of negatively charged particles.
How did Thomson know?
Discovery of the electron Thomson discovered this through his explorations on the properties of cathode rays. Thomson made his suggestion on 30 April 1897 following his discovery that cathode rays (at the time known as Lenard rays) could travel much further through air than expected for an atom-sized particle.
What did JJ Thomson’s cathode ray experiments determine quizlet?
J.J. Thomson discovered that cathode ray particles carry a negative charge. Thomson discovered that cathode ray particles carry a negative charge. These negatively charged particles are deflected from their straight-line path when an electric field is applied.
How did JJ Thomson know the electron was negative?
In order to determine if the cathode ray consisted of charged particles, Thomson used magnets and charged plates to deflect the cathode ray. He observed that cathode rays were deflected by a magnetic field in the same manner as a wire carrying an electric current, which was known to be negatively charged.